CN210717767U - Phase-change energy-storage composite heating system based on electric heat pump - Google Patents
Phase-change energy-storage composite heating system based on electric heat pump Download PDFInfo
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- CN210717767U CN210717767U CN201921075228.1U CN201921075228U CN210717767U CN 210717767 U CN210717767 U CN 210717767U CN 201921075228 U CN201921075228 U CN 201921075228U CN 210717767 U CN210717767 U CN 210717767U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 58
- 239000002131 composite material Substances 0.000 title claims abstract description 13
- 238000004146 energy storage Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 238000005338 heat storage Methods 0.000 claims abstract description 75
- 230000008859 change Effects 0.000 claims abstract description 46
- 230000007704 transition Effects 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005485 electric heating Methods 0.000 abstract description 23
- 230000005611 electricity Effects 0.000 abstract description 20
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 9
- 238000009825 accumulation Methods 0.000 description 8
- 239000002918 waste heat Substances 0.000 description 8
- 244000062793 Sorghum vulgare Species 0.000 description 6
- 235000019713 millet Nutrition 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 239000011232 storage material Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
A phase change energy storage composite heating system based on an electric heating pump comprises a low-temperature heat source, an electric heating pump, a phase change heat storage module II, heating equipment, a plurality of valves and a circulating water pump, wherein the valves and the circulating water pump are arranged on pipelines, the low-temperature heat source is connected with a heat source water inlet and a heat source water outlet of the electric heating pump through the water pump, a hot water outlet of the electric heating pump is divided into two paths, one path is connected to a water inlet of the heating equipment through a heat supply bypass pipeline, a water outlet of the heating equipment is connected to a hot water inlet of the electric heating pump through a water return pipeline, the other path is connected with an inlet of the phase change heat storage module II through a pipeline, an outlet of the phase change heat storage module II is connected with two branch pipelines in parallel, one branch pipeline is connected to a hot water inlet of the electric heating pump, the other branch pipeline, By utilizing the price advantage of the valley electricity and adopting the valley electricity to store heat, the high-efficiency heat supply is realized.
Description
Technical Field
The utility model relates to an energy-concerving and environment-protective technical field, what specifically say is a phase transition energy storage composite heating system based on electric heat pump.
Background
At present, a large amount of industrial waste heat exists in an industrial area, most of the industrial waste heat is directly discharged to cause a large amount of energy waste, at present, most of enterprise heating adopts a gas boiler, an electric boiler, a unit type air source heat pump or a ground source heat pump, and the gas boiler has the defect of overhigh heating cost; the energy efficiency of the electric boiler is low, and the energy consumption is large; the operation efficiency of the unit type air source heat pump is greatly influenced by the outside air temperature, and the efficiency is lower; the ground source heat pump is limited by water source conditions, water layer geological structures and the use policy of water sources, so that the ground source heat pump is difficult to popularize and utilize. In addition, the price difference of the peak, valley and average electricity of the city is large, the influence on the electricity utilization cost of enterprises is large, and the production cost of the enterprises can be reduced by reducing the operation power of the heat pump in the peak electricity period.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a phase transition energy storage composite heating system based on electric heat pump can high-efficiently retrieve the industry low temperature waste heat of enterprise, utilize millet electricity price advantage, adopts millet electricity heat accumulation, realizes high-efficient heat supply.
In order to realize the technical purpose, the adopted technical scheme is as follows: the utility model provides a phase transition energy storage composite heating system based on electric heat pump, including the low temperature heat source, the electric heat pump, phase transition heat accumulation module II, heating equipment, a plurality of valves and circulating water pump of setting on the pipeline, the low temperature heat source passes through the water pump and is connected with the heat source water inlet and outlet of electric heat pump, the hot water outlet of electric heat pump divide into two the tunnel, one pass through on heat supply bypass pipe connects to heating equipment's water inlet, heating equipment's delivery port is connected to the hot water import of electric heat pump through the return water pipeline, another pass through the pipeline and link to each other with the import of phase transition heat accumulation module II, two parallelly connected branch road pipelines of phase transition heat accumulation module II's export, a branch road pipe connects on electric heat pump's hot water import, another branch road pipeline directly links to each other on heating equipment import.
The heating device comprises a heat exchanger and a heat consumer connected to the heat exchanger, or only comprises the heat consumer.
The phase-change energy storage composite heating system further comprises a solar heat collector and a phase-change heat storage module I, the solar heat collector is connected to the phase-change heat storage module I through a water pump and a valve to store heat to the phase-change heat storage module I, an outlet of the phase-change heat storage module I is connected with a water inlet of heating equipment, and an inlet of the phase-change heat storage module I is connected with a water outlet of the heating equipment.
The utility model has the advantages that:
the heat storage and heating system takes an electric heating pump, a phase change heat storage module, a solar heat collector, a heat exchanger, an electric valve and a circulating water pump as cores, adopts a high-efficiency electric heating pump, a phase change heat storage module and a utilization control system, fully recovers low-temperature waste heat, greatly reduces the discharge temperature of the waste heat and reduces heat pollution; the electricity price advantage of the valley period is fully utilized, and the intermittent operation of the urban electricity load in the peak valley period and the ordinary period is utilized, so that the peak clipping and valley filling are realized, and the enterprise heating cost is reduced. Solar thermal collectors are adopted to absorb solar heat storage in the daytime, heat is supplied in an auxiliary mode at night, the running number of the electric heating pumps is reduced, and the energy consumption of the electric heating pumps is reduced.
Drawings
FIG. 1 is a flow chart of a system of example 1;
FIG. 2 is a system flowchart of example 2;
in the figure: 1. solar collector, 2, circulating water pump I, 3, phase change heat accumulation module I, 4, valve I, 5, circulating water pump II, 3, low temperature heat source, 7, circulating water pump III, 8, valve II, 9, electric heat pump, 10, valve II, 11, valve III, 12, valve IV, 13, phase change heat accumulation module II, 14, valve V, 15, valve VI, 16, valve VII, 17, heat exchanger, 18, heat consumer, 19, circulating water pump IV, 20, heat supply bypass pipeline, 21, return water pipeline.
Detailed Description
The utility model provides a phase transition energy storage composite heating system based on electric heat pump, includes low temperature heat source 6, electric heat pump 9, phase transition heat accumulation module II 13, heating equipment, sets up a plurality of valves and circulating water pump on the pipeline, and the industry waste heat is retrieved to the high efficiency, utilizes millet electricity running cost advantage, adopts solar collector auxiliary heating, and the stable high efficiency of whole day provides regional heat.
The low-temperature heat source 6 is connected with a heat source water inlet and a heat source water outlet of the electric heating pump 9 through a water pump, a hot water outlet of the electric heating pump 9 is divided into two paths, one path is directly connected to a water inlet of heating equipment through a heat supply bypass pipeline 20, a water outlet of the heating equipment is connected to a hot water inlet of the electric heating pump 9 through a water return pipeline 21, the other path is connected with an inlet of the phase change heat storage module II 13 through a pipeline, an outlet of the phase change heat storage module II 13 is connected with two branch pipelines in parallel, one branch pipeline is connected to a hot water inlet of the electric heating pump 9, the other branch pipeline is directly connected to an inlet of the heating equipment, and an outlet of the heating equipment is.
At the valley electricity period, the electric heat pump works to absorb heat of the low-temperature heat source, hot water from the circulating pump II 5 enters the electric heat pump through the valve 10 to be heated, the hot water generated by the electric heat pump is divided into two paths, one path of hot water enters the phase change heat storage module II to store heat, and the other path of hot water enters the heating equipment to supply heat.
Phase change energy storage composite heating system still includes solar collector 1 and phase change heat storage module I3, and solar collector 1 is connected to phase change heat storage module I3 through water pump and valve and is gone up to phase change heat storage module I3 heat accumulation, and the export of phase change heat storage module I3 is connected with heating equipment's water inlet, and the import of phase change heat storage module I3 is connected with heating equipment's delivery port.
Outside the valley electricity time period at night and in the daytime: the phase change heat storage module II 13 supplies heat to heating equipment; the solar heat collector directly enters a heat storage mode of the phase change heat storage module I in the daytime.
The application occasions are as follows: the enterprises which utilize valley electricity and produce by staggering peaks only have the situation that the process waste heat (namely, the low-temperature heat source) is stably discharged at night and have the heat supply requirement all day long, or have the situation that the process waste heat (namely, the low-temperature heat source) is stably discharged all day long and have the heat supply requirement all day long.
This scheme of can adopting, concrete flow is as shown in figure 1, and one or more heat pump set are opened simultaneously to the millet electricity period at night, and a part heat pump carries out the heat-retaining, and a part heat pump can directly carry out regional heating, and the millet electricity finishes the period, utilizes the heat of phase change heat storage module storage to release heat and carries out room heating. The quantity and power of the heat pump and the phase change heat storage module are determined according to the heat load of a user.
When the load of the heat user is small, the heat can be directly supplied to the user without an intermediate heat exchanger, and the method adopts the figure 2.
The system adopts and opens the heat pump set heat-retaining night, and phase change heat storage module is exothermic daytime, and the electrovalence advantage of make full use of millet electricity period utilizes city power consumption load peak valley period intermittent operation at ordinary times, realizes "the peak clipping fills the valley", reduces the heating cost, and recycle waste heat simultaneously reduces the discharge temperature of waste heat by a wide margin, reduces thermal pollution.
The electric heat pump unit adopted by the system is a voltage compression type water source heat pump, and has the advantages of high efficiency, compact structure, convenient arrangement, no influence of winter environmental temperature on efficiency, flexible adjustment and the like.
All pipelines in the system can be combined as required, and the heat storage circulation of the phase change heat storage module II, the heat supply circulation of the electric heating pump, the heat storage circulation of the phase change heat storage module I and the heat supply circulation can be met.
The present invention will be described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.
Example 1:
the working process is as follows:
as shown in fig. 1, the system is composed of an electric heating pump, a solar heat collector, a low-temperature heat source, a phase-change heat storage module, a heat exchanger, a heat consumer, a water pump and a valve, and is divided into direct heat supply and heat storage and supply circulation of the electric heating pump and heat storage and supply circulation of the solar heat collector.
And an evening valley electricity stage: and one path of the electric heating pump is directly used for heating, the other path of the electric heating pump is used for storing heat, and the heat absorbed by the electric heating pump from the low-temperature heat source is stored in the phase change heat storage module II 13. The method specifically comprises the following steps: the electric heat pump 9 is started, a low-temperature heat source circulating water pump III 7 pipeline is started, a circulating water pump II 5, a circulating water pump IV 19, a valve II 10, a valve V14 and a valve VI 15 are started, other water pumps and valves are closed, one pipeline heats and stores heat for the phase change heat storage module II 13, and the heat passes through the circulating water pump II 5, the valve II 10, the electric heat pump 9, the phase change heat storage module II 13 and the valve VI 15 at one time; after the temperature of the heat storage material rises to the set temperature, the heat storage circulation is stopped, the other path of heat storage material directly enters the heat exchanger, and hot water from the electric heat pump 9 enters the heat exchanger 17 through a valve V14; and the heating circulation is carried out on the heat user side through a circulating water pump IV 19 and a heat exchanger 17.
In the off-peak electricity period at night: the phase change heat storage modules I and II are used for heat release and heating, specifically, a circulating water pump II 5, a circulating water pump IV 19, a valve I4, a valve IV 12, a valve III 11 and a valve VII 16 are turned on, other water pumps and valves are turned off, the phase change heat storage modules I and II directly enter the heat exchanger to release heat, and the heat user side performs heating circulation through the circulating water pump IV 19 and the heat exchanger 17.
The day time period: heat is stored in the phase change heat storage module I through the solar heat collector 1, and heat is released and supplied to the outside by the phase change heat storage module II. The method specifically comprises the following steps: and (3) starting the circulating water pump I2, the valve II 8, the circulating water pump II 5, the circulating water pump IV 19, the valve III 11 and the valve VII 16, closing other water pumps and valves, and heating hot water from the phase change heat storage module II 13 and then entering a user side for releasing heat. The solar heat collector carries out hot water circulation heat storage, and heat storage is to phase change heat storage module I3.
Example 2:
the working process is as follows:
as shown in fig. 2, the system is composed of an electric heat pump, a solar heat collector, a low-temperature heat source, a phase-change heat storage module, a heat exchanger, a heat consumer, a water pump and a valve, and is divided into direct heat supply and heat storage and supply circulation of the electric heat pump and heat storage and supply circulation of the solar heat collector.
And an evening valley electricity stage: and one path of the electric heating pump is directly used for heating, the other path of the electric heating pump is used for storing heat, and the heat absorbed by the electric heating pump from the low-temperature heat source is stored in the phase change heat storage module II 13. The method specifically comprises the following steps: the electric heat pump 9 is started, a low-temperature heat source circulating water pump III 7 pipeline is started, a circulating water pump II 5, a circulating water pump IV 19, a valve II 10, a valve V14 and a valve VI 15 are started, other water pumps and valves are closed, one pipeline heats and stores heat for the phase change heat storage module II 13, and the heat passes through the circulating water pump II 5, the valve II 10, the electric heat pump 9, the phase change heat storage module II 13 and the valve VI 15 at one time; after the temperature of the heat storage material rises to the set temperature, the heat storage circulation is stopped, the other path of the heat storage material directly enters a heat user, and the heat user is directly connected with a heat storage and supply system.
In the off-peak electricity period at night: utilize phase change heat storage module I, II to release heat and supply, specifically do: and (3) opening a circulating water pump II 5, a circulating water pump IV 19, a valve I4, a valve IV 12, a valve III 11 and a valve VII 16, closing other water pumps and valves, directly entering the phase change heat storage modules I and II into a heat user to release heat, and performing heating circulation by the heat user.
The day time period: heat is stored in the phase change heat storage module I through the solar heat collector 1, and heat is released and supplied to the outside by the phase change heat storage module II. The method specifically comprises the following steps: and (3) starting the circulating water pump I2, the valve II 8, the circulating water pump II 5, the circulating water pump IV 19, the valve III 11 and the valve VII 16, closing other water pumps and valves, and heating hot water from the phase change heat storage module II 13 and then entering a heat user to release heat. The solar heat collector carries out hot water circulation heat storage, and heat storage is to phase change heat storage module I3.
In addition: the number and power of the electric heat pumps are determined according to the heat load and the heating demand. The quantity and power of the heat storage circulating system of the solar heat collector are determined according to the heat load, the heating demand and the site condition.
The utility model discloses do not receive the restriction of above-mentioned embodiment, all equal transform or applying mechanically that go on this technical scheme basis do not exclude outside this patent protection scope.
Claims (3)
1. The utility model provides a phase transition energy storage composite heating system based on electric heat pump which characterized in that: comprises a low-temperature heat source (6), an electric heat pump (9) and a phase change heat storage module II (13), heating equipment, a plurality of valves and circulating water pump set up on the pipeline, low temperature heat source (6) are connected with the heat source water inlet and outlet of electric heat pump (9) through the water pump, the hot water outlet of electric heat pump (9) divide into two the tunnel, one road is connected to the water inlet of heating equipment through heat supply bypass pipeline (20), the delivery port of heating equipment is connected to the hot water inlet of electric heat pump (9) through return water pipeline (21), another road links to each other with the import of phase change heat storage module II (13) through the pipeline, two branch road pipelines are connected in parallel to the export of phase change heat storage module II (13), a branch road pipe coupling is on the hot water inlet of electric heat pump (9), another branch road pipeline is direct-connected on the heating equipment import, the export of heating equipment links to each other through the pipeline and the import of phase change heat storage module.
2. The phase-change energy-storage composite heating system based on the electric heat pump as claimed in claim 1, characterized in that: the heating device comprises a heat exchanger and a heat consumer connected to the heat exchanger, or only comprises the heat consumer.
3. The phase-change energy-storage composite heating system based on the electric heat pump as claimed in claim 1, characterized in that: the phase-change energy storage composite heating system further comprises a solar heat collector (1) and a phase-change heat storage module I (3), the solar heat collector (1) is connected to the phase-change heat storage module I (3) through a water pump and a valve to store heat in the phase-change heat storage module I (3), an outlet of the phase-change heat storage module I (3) is connected with a water inlet of heating equipment, and an inlet of the phase-change heat storage module I (3) is connected with a water outlet of the heating equipment.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410841A (en) * | 2019-07-10 | 2019-11-05 | 洛阳双瑞特种装备有限公司 | A phase change energy storage compound heating system based on electric heat pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410841A (en) * | 2019-07-10 | 2019-11-05 | 洛阳双瑞特种装备有限公司 | A phase change energy storage compound heating system based on electric heat pump |
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Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |